13490447 has 4 divisors (see below), whose sum is σ = 13530816. Its totient is φ = 13450080.

The previous prime is 13490419. The next prime is 13490471. The reversal of 13490447 is 74409431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74409431 = 661 ⋅112571.

It is a cyclic number.

It is not a de Polignac number, because 13490447 - 2¹⁴ = 13474063 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13490417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19679 + ... + 20352.

It is an arithmetic number, because the mean of its divisors is an integer number (3382704).

Almost surely, 2^13490447 is an apocalyptic number.

13490447 is a deficient number, since it is larger than the sum of its proper divisors (40369).

13490447 is an equidigital number, since it uses as much as digits as its factorization.

13490447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40368.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 13490447 is about 3672.9343854744. The cubic root of 13490447 is about 238.0539799412.

Adding to 13490447 its reverse (74409431), we get a palindrome (87899878).

The spelling of 13490447 in words is "thirteen million, four hundred ninety thousand, four hundred forty-seven".